Atom
Name
Hydrogen
IUPAC name
Hydrogen
InChI
InChI=1S/H
InChI key
YZCKVEUIGOORGS-UHFFFAOYSA-N
CAS number
1333-74-0
Comments
natural H, 99.985% 1H, 0.015% D
Symbol and fundamental properties
Symbol
H
Formula
H
Charge
0
Atomic number Z
1
Molar mass
1.00794 g/mol
State STP
gas
Electronegativity
2.2
Isotope mixture type
terrestrial abundance
Isotopes
  IUPAC Name A Mole fraction
Protium 1 0.999885
Deuterium 2 0.000115
Tritium 3 0.0
Type K
Energy (keV) 0.0136